SMC Networks ASD F-A Series Operation Manual page 8

Precautions for One-Touch Tube Fittings
Mounting/ Piping
Caution
(1) Connection and disconnection of tube
from one-touch fitting
① Installation of tube
1) Cut the tube perpendicularly, being careful not
to damage the external surface. Use an SMC
tube cutter TK-1, 2, 3, 5 or 6. Do not cut the
tubing with pliers, nippers, scissors, etc.,
otherwise the tubing will be deformed and
problems may result.
2) The outside diameter of the polyurethane
tubing swells when internal pressure is
applied to it. Therefore, it may be impossible
to re-insert the tubing into One-touch fittings.
Check the tubing outside diameter, and when
the accuracy of the outside diameter is
+0.07mm or larger for φ2, and +0.15mm or
larger for other sizes, re-insert it into the
One-touch fitting without cutting the tube.
When the tubing is re-inserted into the
One-touch fitting, confirm that the tubing goes
through the release button smoothly.
3) Grasp the tubing, and slowly push it straight
(0 to 5°) into the One-touch fitting until it
comes to a stop.
4) Pull the tubing back gently to make sure it has
a positive seal. Insufficient installation may
cause air to leak or the tubing to release.
As a guide for checking if the tubing is pulled
out or not, refer to the following table.
② Removal of the tube
1) Push the release button flange evenly and
sufficiently to release the tube.
push in the tubing before pressing the
release button.
2) Pull out the tubing while keeping the release
button depressed. If the release button is
not held down sufficiently, the tubing cannot
be withdrawn.
3) To reuse the tubing, remove the previously
lodged portion of the tubing. If the lodged
portion is left on without being removed, it
may result in air leakage and make the
removal of the tubing difficult.
(2) Connection of the metal rod accessories
Products with metal rods (KC series,
previous KQ series, KN series, KM series,
etc.) cannot be connected to KQ2 series
One-touch fittings. If connected, the metal
rod cannot be retained by the chuck of the
One-touch fitting, and products with metal
rods may project during pressurization,
causing serious personal injury or accident.
Even when products with metal rods can be
connected to other One-touch fittings, do
not use any tube, resin plug, or reducer
after
releasing.
(3) When mounting the tube, resin plug or
metal rod, do not press the release button.
Do not press the release button unnecessarily
before mounting tubing, resin plugs and metal
rods. This can cause the disconnection of
tube.
(4) When using tubing from a manufacturer
other than SMC, be careful of the tolerance
of the tubing O.D. and tubing material.
1) Nylon tubing
2) Soft nylon tubing
3) Polyurethane tubing
Do not use tubing which does not satisfy the
specified tubing O.D. accuracy, or tubing with
an I.D., material, hardness, or surface
roughness that differs from SMC's tubing. It
may cause difficulty in connecting the tubing,
leakage, disconnection of the tubing, or fitting
damage.
When used with tubing other than those from
Do not
SMC, due to their properties, the products
listed below are not subject to warranty.
7
Mounting/Piping
Caution
connection. This
Within ±0.1 mm
Within ±0.1 mm
Within +0.15 mm,
Within -0.2 mm
may cause